static uint64_t CalculateCookiePadding(ASTContext &Ctx, const CXXNewExpr *E) {
if (!E->isArray())
return 0;
QualType T = E->getAllocatedType();
const RecordType *RT = T->getAs<RecordType>();
if (!RT)
return 0;
const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(RT->getDecl());
if (!RD)
return 0;
// Check if the class has a trivial destructor.
if (RD->hasTrivialDestructor()) {
// FIXME: Check for a two-argument delete.
return 0;
}
// Padding is the maximum of sizeof(size_t) and alignof(T)
return std::max(Ctx.getTypeSize(Ctx.getSizeType()),
static_cast<uint64_t>(Ctx.getTypeAlign(T))) / 8;
}
ArgType PrintfSpecifier::getArgType(ASTContext &Ctx,
bool IsObjCLiteral) const {
const PrintfConversionSpecifier &CS = getConversionSpecifier();
if (!CS.consumesDataArgument())
return ArgType::Invalid();
if (CS.getKind() == ConversionSpecifier::cArg)
switch (LM.getKind()) {
case LengthModifier::None:
return Ctx.IntTy;
case LengthModifier::AsLong:
case LengthModifier::AsWide:
return ArgType(ArgType::WIntTy, "wint_t");
case LengthModifier::AsShort:
if (Ctx.getTargetInfo().getTriple().isOSMSVCRT())
return Ctx.IntTy;
LLVM_FALLTHROUGH;
default:
return ArgType::Invalid();
}
if (CS.isIntArg())
switch (LM.getKind()) {
case LengthModifier::AsLongDouble:
// GNU extension.
return Ctx.LongLongTy;
case LengthModifier::None:
return Ctx.IntTy;
case LengthModifier::AsInt32:
return ArgType(Ctx.IntTy, "__int32");
case LengthModifier::AsChar: return ArgType::AnyCharTy;
case LengthModifier::AsShort: return Ctx.ShortTy;
case LengthModifier::AsLong: return Ctx.LongTy;
case LengthModifier::AsLongLong:
case LengthModifier::AsQuad:
return Ctx.LongLongTy;
case LengthModifier::AsInt64:
return ArgType(Ctx.LongLongTy, "__int64");
case LengthModifier::AsIntMax:
return ArgType(Ctx.getIntMaxType(), "intmax_t");
case LengthModifier::AsSizeT:
// FIXME: How to get the corresponding signed version of size_t?
return ArgType();
case LengthModifier::AsInt3264:
return Ctx.getTargetInfo().getTriple().isArch64Bit()
? ArgType(Ctx.LongLongTy, "__int64")
: ArgType(Ctx.IntTy, "__int32");
case LengthModifier::AsPtrDiff:
return ArgType(Ctx.getPointerDiffType(), "ptrdiff_t");
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
case LengthModifier::AsWide:
return ArgType::Invalid();
}
if (CS.isUIntArg())
switch (LM.getKind()) {
case LengthModifier::AsLongDouble:
// GNU extension.
return Ctx.UnsignedLongLongTy;
case LengthModifier::None:
return Ctx.UnsignedIntTy;
case LengthModifier::AsInt32:
return ArgType(Ctx.UnsignedIntTy, "unsigned __int32");
case LengthModifier::AsChar: return Ctx.UnsignedCharTy;
case LengthModifier::AsShort: return Ctx.UnsignedShortTy;
case LengthModifier::AsLong: return Ctx.UnsignedLongTy;
case LengthModifier::AsLongLong:
case LengthModifier::AsQuad:
return Ctx.UnsignedLongLongTy;
case LengthModifier::AsInt64:
return ArgType(Ctx.UnsignedLongLongTy, "unsigned __int64");
case LengthModifier::AsIntMax:
return ArgType(Ctx.getUIntMaxType(), "uintmax_t");
case LengthModifier::AsSizeT:
return ArgType(Ctx.getSizeType(), "size_t");
case LengthModifier::AsInt3264:
return Ctx.getTargetInfo().getTriple().isArch64Bit()
? ArgType(Ctx.UnsignedLongLongTy, "unsigned __int64")
: ArgType(Ctx.UnsignedIntTy, "unsigned __int32");
case LengthModifier::AsPtrDiff:
// FIXME: How to get the corresponding unsigned
// version of ptrdiff_t?
return ArgType();
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
case LengthModifier::AsWide:
return ArgType::Invalid();
}
if (CS.isDoubleArg()) {
if (LM.getKind() == LengthModifier::AsLongDouble)
return Ctx.LongDoubleTy;
return Ctx.DoubleTy;
}
if (CS.getKind() == ConversionSpecifier::nArg) {
switch (LM.getKind()) {
case LengthModifier::None:
return ArgType::PtrTo(Ctx.IntTy);
case LengthModifier::AsChar:
return ArgType::PtrTo(Ctx.SignedCharTy);
case LengthModifier::AsShort:
return ArgType::PtrTo(Ctx.ShortTy);
case LengthModifier::AsLong:
return ArgType::PtrTo(Ctx.LongTy);
case LengthModifier::AsLongLong:
case LengthModifier::AsQuad:
return ArgType::PtrTo(Ctx.LongLongTy);
case LengthModifier::AsIntMax:
return ArgType::PtrTo(ArgType(Ctx.getIntMaxType(), "intmax_t"));
case LengthModifier::AsSizeT:
return ArgType(); // FIXME: ssize_t
case LengthModifier::AsPtrDiff:
return ArgType::PtrTo(ArgType(Ctx.getPointerDiffType(), "ptrdiff_t"));
case LengthModifier::AsLongDouble:
return ArgType(); // FIXME: Is this a known extension?
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
case LengthModifier::AsInt32:
case LengthModifier::AsInt3264:
case LengthModifier::AsInt64:
case LengthModifier::AsWide:
return ArgType::Invalid();
}
}
switch (CS.getKind()) {
case ConversionSpecifier::sArg:
if (LM.getKind() == LengthModifier::AsWideChar) {
if (IsObjCLiteral)
return ArgType(Ctx.getPointerType(Ctx.UnsignedShortTy.withConst()),
"const unichar *");
return ArgType(ArgType::WCStrTy, "wchar_t *");
}
if (LM.getKind() == LengthModifier::AsWide)
return ArgType(ArgType::WCStrTy, "wchar_t *");
return ArgType::CStrTy;
case ConversionSpecifier::SArg:
if (IsObjCLiteral)
return ArgType(Ctx.getPointerType(Ctx.UnsignedShortTy.withConst()),
"const unichar *");
if (Ctx.getTargetInfo().getTriple().isOSMSVCRT() &&
LM.getKind() == LengthModifier::AsShort)
return ArgType::CStrTy;
return ArgType(ArgType::WCStrTy, "wchar_t *");
case ConversionSpecifier::CArg:
if (IsObjCLiteral)
return ArgType(Ctx.UnsignedShortTy, "unichar");
if (Ctx.getTargetInfo().getTriple().isOSMSVCRT() &&
LM.getKind() == LengthModifier::AsShort)
return Ctx.IntTy;
return ArgType(Ctx.WideCharTy, "wchar_t");
case ConversionSpecifier::pArg:
case ConversionSpecifier::PArg:
return ArgType::CPointerTy;
case ConversionSpecifier::ObjCObjArg:
return ArgType::ObjCPointerTy;
default:
break;
}
// FIXME: Handle other cases.
return ArgType();
}
ScanfArgTypeResult ScanfSpecifier::getArgType(ASTContext &Ctx) const {
const ScanfConversionSpecifier &CS = getConversionSpecifier();
if (!CS.consumesDataArgument())
return ScanfArgTypeResult::Invalid();
switch(CS.getKind()) {
// Signed int.
case ConversionSpecifier::dArg:
case ConversionSpecifier::iArg:
switch (LM.getKind()) {
case LengthModifier::None: return ArgTypeResult(Ctx.IntTy);
case LengthModifier::AsChar:
return ArgTypeResult(ArgTypeResult::AnyCharTy);
case LengthModifier::AsShort: return ArgTypeResult(Ctx.ShortTy);
case LengthModifier::AsLong: return ArgTypeResult(Ctx.LongTy);
case LengthModifier::AsLongLong: return ArgTypeResult(Ctx.LongLongTy);
case LengthModifier::AsIntMax:
return ScanfArgTypeResult(Ctx.getIntMaxType(), "intmax_t *");
case LengthModifier::AsSizeT:
// FIXME: ssize_t.
return ScanfArgTypeResult();
case LengthModifier::AsPtrDiff:
return ScanfArgTypeResult(Ctx.getPointerDiffType(), "ptrdiff_t *");
case LengthModifier::AsLongDouble: return ScanfArgTypeResult::Invalid();
case LengthModifier::AsAllocate: return ScanfArgTypeResult::Invalid();
case LengthModifier::AsMAllocate: return ScanfArgTypeResult::Invalid();
}
// Unsigned int.
case ConversionSpecifier::oArg:
case ConversionSpecifier::uArg:
case ConversionSpecifier::xArg:
case ConversionSpecifier::XArg:
switch (LM.getKind()) {
case LengthModifier::None: return ArgTypeResult(Ctx.UnsignedIntTy);
case LengthModifier::AsChar: return ArgTypeResult(Ctx.UnsignedCharTy);
case LengthModifier::AsShort: return ArgTypeResult(Ctx.UnsignedShortTy);
case LengthModifier::AsLong: return ArgTypeResult(Ctx.UnsignedLongTy);
case LengthModifier::AsLongLong:
return ArgTypeResult(Ctx.UnsignedLongLongTy);
case LengthModifier::AsIntMax:
return ScanfArgTypeResult(Ctx.getUIntMaxType(), "uintmax_t *");
case LengthModifier::AsSizeT:
return ScanfArgTypeResult(Ctx.getSizeType(), "size_t *");
case LengthModifier::AsPtrDiff:
// FIXME: Unsigned version of ptrdiff_t?
return ScanfArgTypeResult();
case LengthModifier::AsLongDouble: return ScanfArgTypeResult::Invalid();
case LengthModifier::AsAllocate: return ScanfArgTypeResult::Invalid();
case LengthModifier::AsMAllocate: return ScanfArgTypeResult::Invalid();
}
// Float.
case ConversionSpecifier::aArg:
case ConversionSpecifier::AArg:
case ConversionSpecifier::eArg:
case ConversionSpecifier::EArg:
case ConversionSpecifier::fArg:
case ConversionSpecifier::FArg:
case ConversionSpecifier::gArg:
case ConversionSpecifier::GArg:
switch (LM.getKind()) {
case LengthModifier::None: return ArgTypeResult(Ctx.FloatTy);
case LengthModifier::AsLong: return ArgTypeResult(Ctx.DoubleTy);
case LengthModifier::AsLongDouble:
return ArgTypeResult(Ctx.LongDoubleTy);
default:
return ScanfArgTypeResult::Invalid();
}
// Char, string and scanlist.
case ConversionSpecifier::cArg:
case ConversionSpecifier::sArg:
case ConversionSpecifier::ScanListArg:
switch (LM.getKind()) {
case LengthModifier::None: return ScanfArgTypeResult::CStrTy;
case LengthModifier::AsLong:
return ScanfArgTypeResult(ScanfArgTypeResult::WCStrTy, "wchar_t *");
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
return ScanfArgTypeResult(ArgTypeResult::CStrTy);
default:
return ScanfArgTypeResult::Invalid();
}
case ConversionSpecifier::CArg:
case ConversionSpecifier::SArg:
// FIXME: Mac OS X specific?
switch (LM.getKind()) {
case LengthModifier::None:
return ScanfArgTypeResult(ScanfArgTypeResult::WCStrTy, "wchar_t *");
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
return ScanfArgTypeResult(ArgTypeResult::WCStrTy, "wchar_t **");
default:
return ScanfArgTypeResult::Invalid();
}
// Pointer.
case ConversionSpecifier::pArg:
return ScanfArgTypeResult(ArgTypeResult(ArgTypeResult::CPointerTy));
default:
break;
}
return ScanfArgTypeResult();
}
ArgTypeResult PrintfSpecifier::getArgType(ASTContext &Ctx) const {
const PrintfConversionSpecifier &CS = getConversionSpecifier();
if (!CS.consumesDataArgument())
return ArgTypeResult::Invalid();
if (CS.getKind() == ConversionSpecifier::cArg)
switch (LM.getKind()) {
case LengthModifier::None: return Ctx.IntTy;
case LengthModifier::AsLong:
return ArgTypeResult(ArgTypeResult::WIntTy, "wint_t");
default:
return ArgTypeResult::Invalid();
}
if (CS.isIntArg())
switch (LM.getKind()) {
case LengthModifier::AsLongDouble:
return ArgTypeResult::Invalid();
case LengthModifier::None: return Ctx.IntTy;
case LengthModifier::AsChar: return ArgTypeResult::AnyCharTy;
case LengthModifier::AsShort: return Ctx.ShortTy;
case LengthModifier::AsLong: return Ctx.LongTy;
case LengthModifier::AsLongLong: return Ctx.LongLongTy;
case LengthModifier::AsIntMax:
return ArgTypeResult(Ctx.getIntMaxType(), "intmax_t");
case LengthModifier::AsSizeT:
// FIXME: How to get the corresponding signed version of size_t?
return ArgTypeResult();
case LengthModifier::AsPtrDiff:
return ArgTypeResult(Ctx.getPointerDiffType(), "ptrdiff_t");
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
return ArgTypeResult::Invalid();
}
if (CS.isUIntArg())
switch (LM.getKind()) {
case LengthModifier::AsLongDouble:
return ArgTypeResult::Invalid();
case LengthModifier::None: return Ctx.UnsignedIntTy;
case LengthModifier::AsChar: return Ctx.UnsignedCharTy;
case LengthModifier::AsShort: return Ctx.UnsignedShortTy;
case LengthModifier::AsLong: return Ctx.UnsignedLongTy;
case LengthModifier::AsLongLong: return Ctx.UnsignedLongLongTy;
case LengthModifier::AsIntMax:
return ArgTypeResult(Ctx.getUIntMaxType(), "uintmax_t");
case LengthModifier::AsSizeT:
return ArgTypeResult(Ctx.getSizeType(), "size_t");
case LengthModifier::AsPtrDiff:
// FIXME: How to get the corresponding unsigned
// version of ptrdiff_t?
return ArgTypeResult();
case LengthModifier::AsAllocate:
case LengthModifier::AsMAllocate:
return ArgTypeResult::Invalid();
}
if (CS.isDoubleArg()) {
if (LM.getKind() == LengthModifier::AsLongDouble)
return Ctx.LongDoubleTy;
return Ctx.DoubleTy;
}
switch (CS.getKind()) {
case ConversionSpecifier::sArg:
if (LM.getKind() == LengthModifier::AsWideChar)
return ArgTypeResult(ArgTypeResult::WCStrTy, "wchar_t *");
return ArgTypeResult::CStrTy;
case ConversionSpecifier::SArg:
// FIXME: This appears to be Mac OS X specific.
return ArgTypeResult(ArgTypeResult::WCStrTy, "wchar_t *");
case ConversionSpecifier::CArg:
return ArgTypeResult(Ctx.WCharTy, "wchar_t");
case ConversionSpecifier::pArg:
return ArgTypeResult::CPointerTy;
default:
break;
}
// FIXME: Handle other cases.
return ArgTypeResult();
}
QualType SymbolExtent::getType(ASTContext &Ctx) const {
return Ctx.getSizeType();
}
/// DecodeTypeFromStr - This decodes one type descriptor from Str, advancing the
/// pointer over the consumed characters. This returns the resultant type.
static QualType DecodeTypeFromStr(const char *&Str, ASTContext &Context,
Builtin::Context::GetBuiltinTypeError &Error,
bool AllowTypeModifiers = true) {
// Modifiers.
int HowLong = 0;
bool Signed = false, Unsigned = false;
// Read the modifiers first.
bool Done = false;
while (!Done) {
switch (*Str++) {
default: Done = true; --Str; break;
case 'S':
assert(!Unsigned && "Can't use both 'S' and 'U' modifiers!");
assert(!Signed && "Can't use 'S' modifier multiple times!");
Signed = true;
break;
case 'U':
assert(!Signed && "Can't use both 'S' and 'U' modifiers!");
assert(!Unsigned && "Can't use 'S' modifier multiple times!");
Unsigned = true;
break;
case 'L':
assert(HowLong <= 2 && "Can't have LLLL modifier");
++HowLong;
break;
}
}
QualType Type;
// Read the base type.
switch (*Str++) {
default: assert(0 && "Unknown builtin type letter!");
case 'v':
assert(HowLong == 0 && !Signed && !Unsigned &&
"Bad modifiers used with 'v'!");
Type = Context.VoidTy;
break;
case 'f':
assert(HowLong == 0 && !Signed && !Unsigned &&
"Bad modifiers used with 'f'!");
Type = Context.FloatTy;
break;
case 'd':
assert(HowLong < 2 && !Signed && !Unsigned &&
"Bad modifiers used with 'd'!");
if (HowLong)
Type = Context.LongDoubleTy;
else
Type = Context.DoubleTy;
break;
case 's':
assert(HowLong == 0 && "Bad modifiers used with 's'!");
if (Unsigned)
Type = Context.UnsignedShortTy;
else
Type = Context.ShortTy;
break;
case 'i':
if (HowLong == 3)
Type = Unsigned ? Context.UnsignedInt128Ty : Context.Int128Ty;
else if (HowLong == 2)
Type = Unsigned ? Context.UnsignedLongLongTy : Context.LongLongTy;
else if (HowLong == 1)
Type = Unsigned ? Context.UnsignedLongTy : Context.LongTy;
else
Type = Unsigned ? Context.UnsignedIntTy : Context.IntTy;
break;
case 'c':
assert(HowLong == 0 && "Bad modifiers used with 'c'!");
if (Signed)
Type = Context.SignedCharTy;
else if (Unsigned)
Type = Context.UnsignedCharTy;
else
Type = Context.CharTy;
break;
case 'b': // boolean
assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'b'!");
Type = Context.BoolTy;
break;
case 'z': // size_t.
assert(HowLong == 0 && !Signed && !Unsigned && "Bad modifiers for 'z'!");
Type = Context.getSizeType();
break;
case 'F':
Type = Context.getCFConstantStringType();
break;
case 'a':
Type = Context.getBuiltinVaListType();
assert(!Type.isNull() && "builtin va list type not initialized!");
break;
case 'A':
// This is a "reference" to a va_list; however, what exactly
// this means depends on how va_list is defined. There are two
// different kinds of va_list: ones passed by value, and ones
// passed by reference. An example of a by-value va_list is
// x86, where va_list is a char*. An example of by-ref va_list
// is x86-64, where va_list is a __va_list_tag[1]. For x86,
// we want this argument to be a char*&; for x86-64, we want
// it to be a __va_list_tag*.
Type = Context.getBuiltinVaListType();
assert(!Type.isNull() && "builtin va list type not initialized!");
if (Type->isArrayType()) {
Type = Context.getArrayDecayedType(Type);
} else {
Type = Context.getLValueReferenceType(Type);
}
break;
case 'V': {
char *End;
unsigned NumElements = strtoul(Str, &End, 10);
assert(End != Str && "Missing vector size");
Str = End;
QualType ElementType = DecodeTypeFromStr(Str, Context, Error, false);
Type = Context.getVectorType(ElementType, NumElements);
break;
}
case 'P': {
IdentifierInfo *II = &Context.Idents.get("FILE");
DeclContext::lookup_result Lookup
= Context.getTranslationUnitDecl()->lookup(Context, II);
if (Lookup.first != Lookup.second && isa<TypeDecl>(*Lookup.first)) {
Type = Context.getTypeDeclType(cast<TypeDecl>(*Lookup.first));
break;
}
else {
Error = Builtin::Context::GE_Missing_FILE;
return QualType();
}
}
}
if (!AllowTypeModifiers)
return Type;
Done = false;
while (!Done) {
switch (*Str++) {
default: Done = true; --Str; break;
case '*':
Type = Context.getPointerType(Type);
break;
case '&':
Type = Context.getLValueReferenceType(Type);
break;
// FIXME: There's no way to have a built-in with an rvalue ref arg.
case 'C':
Type = Type.getQualifiedType(QualType::Const);
break;
}
}
return Type;
}
